CA28MWV Martensitic Stainless Steel Casting Material
Martensitic Stainless Steel
Introduction
CA28MWV is a martensitic stainless steel grade covered by ASTM A743. Typical applications include pump and valve castings in chemical-processing plants, refineries and power-generation equipment.
| Field | Value |
|---|---|
| Designation | CA28MWV |
| Material Type | Stainless Steel |
| Sub Type | Martensitic Stainless Steel |
| Product Form | casting |
Manufacturing Process
Investment Casting
Shell Molding Casting
Sand Casting
Equivalent Materials
N/A
Similar Materials
N/A
Reference Standards
| Standard | Standard Title | Edition | Specification | Identifier |
|---|---|---|---|---|
| ASTM A743 | Standard Specification for Castings, Iron-Chromium, Iron-Chromium-Nickel, Corrosion Resistant, for General Application | 03 | CA28MWV | UNS J91422 |
Related Casting Products
Physical Properties
N/A
Chemical Composition
| Element | ASTM A743Edition 03 |
|---|---|
| C | 0.20–0.28 % |
| Si | ≤ 1.0 % |
| Mn | 0.50–1.00 % |
| P | ≤ 0.030 % |
| S | ≤ 0.030 % |
| Cr | 11.0–12.5 % |
| Ni | 0.50–1.00 % |
| Mo | 0.90–1.25 % |
| V | 0.20–0.30 % |
| W | 0.90–1.25 % |
Heat Treatment
ASTM A743–03 · Annealing alternative
| Step | Operation | Temperature | Cooling |
|---|---|---|---|
| 1 | Anneal | ≥ 1400 °F / ≥ 760 °C | — |
ASTM A743–03 · Quenching and tempering
| Step | Operation | Temperature | Cooling |
|---|---|---|---|
| 1 | Heat | 1875–1925 °F / 1025–1050 °C | — |
| 2 | Quench | — | air or oil |
| 3 | Temper | ≥ 1150 °F / ≥ 620 °C | — |
Mechanical Properties
Core Mechanical Properties
ASTM A743 — 03 · Table S12.1 — Normative
Notes
ASTM A743 · Edition 03
[1] Tensile Strength/Yield Strength/Elongation/Reduction of Area: Applies only when Supplementary Requirement S12 is specified; Condition: heat-treatment route (1) only; separately cast keel block per S12.2 unless S12.3 agreement applies
[2] Brinell Hardness: Applies only when Supplementary Requirement S14 is specified; Condition: heat-treatment route (1); non-austenitic; per manufacturer–purchaser agreement (S14.2)
[3] Brinell Hardness: Applies only when Supplementary Requirement S14 is specified; Condition: annealed condition; non-austenitic; per manufacturer–purchaser agreement (S14.2)
Welding Conditions
N/A
Applications
Martensitic stainless steel ASTM A743 Grade CA28MWV is used for pump and valve castings in chemical-processing plants, refineries and power-generation equipment. Other cast components used in this material family include impellers, pump casings, valve bodies and internal pump and valve parts. These castings are used in water-service pumping systems, industrial process equipment and power-generation facilities.
Need CA28MWV Castings?
Contact us for casting and machining inquiries.
Email Us for a QuoteLast Updated: November 6, 2026